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The NOCO Boost Plus GB40 costs about $100 and can pay for itself after one or two roadside calls. NOCO lists it at $99.95, and The Zebra puts the average U.S. tow at about $109. If it saves you even one tow or a paid jump start, the math works. It only helps with a dead battery, so it will not replace a tow after a breakdown.
Prices change often, so check the current Amazon or NOCO listing before you buy. Last updated: October 25, 2026.
Quick Answer
The NOCO Boost Plus GB40 lists at $99.95 on NOCO’s site. It delivers 1,000 amps and can jump gas engines up to 6.0L and diesel engines up to 3.0L. The average U.S. tow costs about $109, so one avoided tow covers most of the price.
| Spec | What NOCO lists |
|---|---|
| Peak current | 1,000 amps |
| Engine size | Gas up to 6.0L, diesel up to 3.0L |
| Jump starts per charge | Up to 20 |
| Flashlight | 100 lumens |
| Water and dust rating | IP65 |
| USB output | 5V, 2.1A (data sheet) |
| Weight | 1.65 lb unit only; 2.4 lb with clamps and accessories (data sheet) |
| List price | $99.95 on NOCO’s site; check Amazon for the current price |
Source: NOCO GB40 product page and the NOCO GB40 data sheet. We have not hands-on tested this unit.
NOCO Boost Plus GB40 Cost and Savings
The main saving is avoiding a service call for a dead battery. The Zebra reports an average U.S. towing cost of about $109, with per-mile charges averaging $4.75. Roadside plans and insurance add-ons also cost money each year. A jump starter lets you restart the car yourself in minutes.
| Situation | Without a jump starter | With the GB40 |
|---|---|---|
| Dead battery at home or work | Wait for a neighbor with cables, a roadside plan or a paid service | Jump the car yourself |
| Dead battery on the road | Tow or service call, about $109 on average for a tow | Jump the car yourself |
| Phone dead during an outage | Find a charger | Charge over USB (5V, 2.1A) |
| Night roadside stop | Phone flashlight only | Built-in 100-lumen LED light |
A jump starter will not fix a battery that is failing. If the battery is old, you still need a replacement. It also cannot help with a flat tire, a bad starter or an empty fuel tank. For other roadside repair costs, see our guides to plugging a tire and fixing a coolant leak.
Pros and Limitations
| Pros | Limitations |
|---|---|
| Compact; NOCO lists the unit alone at 1.65 lb | Only for 12V batteries; it will not start a car with a dead starter |
| Works on gas engines up to 6.0L and diesel up to 3.0L | Larger diesel engines are outside its listed range |
| Spark-proof clamps and reverse-polarity protection, per NOCO | Needs periodic recharging, or it may not be ready when you need it |
| USB port can charge a phone, plus a 100-lumen flashlight | Clamp tips can chip with heavy use, according to some buyers |
| Includes clamps and a storage bag per the data sheet | Check the Amazon listing for exactly what ships in the box |
How to Use a Jump Starter Safely
- Make sure the jump starter is charged before you need it.
- Turn off the car and all accessories.
- Connect the clamps to the battery or jump points as shown in the manual: red to positive, black to negative.
- Wait for the unit’s ready indicator, then start the engine.
- Disconnect the clamps once the engine is running, and recharge the unit.
Read the NOCO manual and wear eye protection. Keep the unit within its stated temperature range of -4F to 122F.
Is the NOCO Boost Plus GB40 Worth It?
It is a good fit if you drive an everyday car, SUV or small truck within the engine limits and want a simple backup for a dead battery. It is less useful if you drive a large diesel truck, since NOCO lists diesel engines only up to 3.0L. At about $100, it costs less than many single service calls plus the time you would spend waiting.
Check the NOCO GB40 price on Amazon
Related guides: Tesla charger installation costs | tire plug costs | coolant leak repair costs.
Frequently Asked Questions
How much does the NOCO Boost Plus GB40 cost?
NOCO lists the GB40 at $99.95 on its website. Amazon and other retailers may charge more or less depending on sales, so check the current listing before you buy.
What engines can the NOCO GB40 jump start?
NOCO lists it for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters. Check your engine size before buying.
How many jump starts can the GB40 do on one charge?
NOCO lists up to 20 jump starts on a single charge. Real results depend on temperature, battery condition and engine size.
Can the GB40 charge a phone?
Yes. The data sheet lists a USB output of 5V and 2.1A, so it can charge a phone or other small USB device.
Is the NOCO GB40 worth it compared with a tow?
The average U.S. tow costs about $109 according to The Zebra, and the GB40 lists at $99.95. One avoided tow or service call covers most of the cost, but it only helps with a dead battery.
Conclusion
The NOCO Boost Plus GB40 is a low-cost way to avoid paying for help every time your battery dies. It lists at $99.95, handles gas engines up to 6.0L and diesel up to 3.0L, and also works as a flashlight and USB charger. Confirm your engine size, check the current price and keep the unit charged.
